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Grassi G, Scillitani E, Cecchelli C. New horizons for obsessive-compulsive disorder drug discovery: is targeting glutamate receptors the answer? Expert Opin Drug Discov 2024:1-11. [PMID: 39105546 DOI: 10.1080/17460441.2024.2387127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2024] [Accepted: 07/29/2024] [Indexed: 08/07/2024]
Abstract
INTRODUCTION Over the past decade, glutamate has emerged as a prominent focus in the field of obsessive-compulsive disorder (OCD) pathophysiology. A convergence of evidence from genetic, preclinical, and clinical studies points to glutamatergic dysfunction as a key feature of this condition. In light of these findings, there has been a growing interest in exploring the potential of glutamatergic agents in the treatment of OCD. AREAS COVERED This paper reviews the literature on glutamate transmission in OCD. In addition, the authors examine the results of clinical trials investigating the efficacy of glutamatergic agents in the treatment of OCD patients. EXPERT OPINION Along with the recognition of neuroinflammation in the brain in OCD, the evidence of glutamate dysfunction represents one of the most promising recent discoveries for understanding the mechanisms involved in OCD. The importance of this discovery lies primarily in its pharmacological implications and has led to intense research activity in the field of glutamatergic agents. While this research has not yet had a substantial clinical impact, targeting glutamate receptors remains a promising horizon for the successful treatment of OCD patients.
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Affiliation(s)
- Giacomo Grassi
- Department of Psychiatry, Brain Center Firenze, Florence, Italy
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2
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Shiroma PR, Thuras P, Polusny MA, Kehle-Forbes S, Disner S, Pardo JV, Gilmore C, Tolly B, Voller E, McManus E, King C, Lipinski A, Eng E, Hawkinson F, Wang G. Ketamine-enhanced prolonged exposure therapy in veterans with PTSD: A randomized controlled trial protocol. Contemp Clin Trials 2024; 143:107569. [PMID: 38729297 DOI: 10.1016/j.cct.2024.107569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 04/26/2024] [Accepted: 05/04/2024] [Indexed: 05/12/2024]
Abstract
BACKGROUND The 2023 VA/DoD Clinical Practice Guideline for the Management of PTSD recommends individual, manualized trauma-focused such as Prolonged Exposure (PE) over pharmacologic interventions for the primary treatment of PTSD. Unfortunately, clinical trials of trauma-based therapies in the military and veteran population showed that 30% to 50% of patients did not demonstrate clinically meaningful symptom change. Ketamine, an FDA-approved anesthetic with potent non-competitive glutamatergic N-methyl-d-aspartate antagonistic properties, has demonstrated to enhance the recall of extinction learning and decrease fear renewal without interference of extinction training in preclinical studies. METHODS We plan to conduct a single site RCT comparing three ketamine treatment vs. active placebo (midazolam) adjunct to PE therapy among Veterans with PTSD. Pharmacological phase will start simultaneously with PE session 1. Infusions will be administered 24 h. prior to PE session for the first 3 weeks. After PE is completed (session 10), patients will be assessed during a 3-month follow-up period at various time points. We estimate that out of 100 veterans, 80 will reach time point for primary outcome measure and will be considered for primary analysis. Secondary outcomes include severity of depression and anxiety scores, safety and tolerability of ketamine-enhanced PE therapy, cognitive performance during treatment and early improvement during PE related to the rate of dropouts during PE therapy. DISCUSSION Results of the proposed RCT could provide scientific foundation to distinguish the essential components of this approach, enhance the methodology, elucidate the mechanisms involved, and identify sub-PTSD populations that most likely benefit from this intervention.
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Affiliation(s)
- Paulo R Shiroma
- Mental Health Service Line, Minneapolis VA Health Care System, Minneapolis, MN, United States of America; Department of Psychiatry and Behavioral Sciences, University of Minnesota Medical School, Minneapolis, MN, United States of America.
| | - Paul Thuras
- Mental Health Service Line, Minneapolis VA Health Care System, Minneapolis, MN, United States of America; Department of Psychiatry and Behavioral Sciences, University of Minnesota Medical School, Minneapolis, MN, United States of America
| | - Melissa A Polusny
- Mental Health Service Line, Minneapolis VA Health Care System, Minneapolis, MN, United States of America; Department of Psychiatry and Behavioral Sciences, University of Minnesota Medical School, Minneapolis, MN, United States of America; Center for Care Delivery & Outcomes Research, Minneapolis VA Healthcare System, Minneapolis, MN, United States of America
| | - Shannon Kehle-Forbes
- Mental Health Service Line, Minneapolis VA Health Care System, Minneapolis, MN, United States of America; Department of Psychiatry and Behavioral Sciences, University of Minnesota Medical School, Minneapolis, MN, United States of America; Center for Care Delivery & Outcomes Research, Minneapolis VA Healthcare System, Minneapolis, MN, United States of America
| | - Seth Disner
- Mental Health Service Line, Minneapolis VA Health Care System, Minneapolis, MN, United States of America; Department of Psychiatry and Behavioral Sciences, University of Minnesota Medical School, Minneapolis, MN, United States of America
| | - Jose V Pardo
- Mental Health Service Line, Minneapolis VA Health Care System, Minneapolis, MN, United States of America; Department of Psychiatry and Behavioral Sciences, University of Minnesota Medical School, Minneapolis, MN, United States of America
| | - Casey Gilmore
- Mental Health Service Line, Minneapolis VA Health Care System, Minneapolis, MN, United States of America; Department of Psychiatry and Behavioral Sciences, University of Minnesota Medical School, Minneapolis, MN, United States of America
| | - Brian Tolly
- Department of Anesthesiology, Minneapolis VA Health Care System, Minneapolis, MN, United States of America
| | - Emily Voller
- Mental Health Service Line, Minneapolis VA Health Care System, Minneapolis, MN, United States of America
| | - Eliza McManus
- Mental Health Service Line, Minneapolis VA Health Care System, Minneapolis, MN, United States of America
| | - Christie King
- Mental Health Service Line, Minneapolis VA Health Care System, Minneapolis, MN, United States of America
| | - Alexandra Lipinski
- Mental Health Service Line, VA Maryland Health Care System, Baltimore, MD, United States of America
| | - Emily Eng
- Mental Health Service Line, Minneapolis VA Health Care System, Minneapolis, MN, United States of America; Graduate School of Professional Psychology, Morrison Family College of Health, University of St. Thomas, Saint Paul, MN, United States of America
| | - Francine Hawkinson
- Mental Health Service Line, Minneapolis VA Health Care System, Minneapolis, MN, United States of America
| | - Gloria Wang
- Mental Health Service Line, Minneapolis VA Health Care System, Minneapolis, MN, United States of America
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Rothärmel M, Mekaoui L, Kazour F, Herrero M, Beetz-Lobono EM, Lengvenyte A, Holtzmann J, Raynaud P, Cuenca M, Bulteau S, de Maricourt P, Husson T, Olié E, Gohier B, Sauvaget A, Gaillard R, Richieri R, Szekely D, Samalin L, Guillin O, Moulier V, El-Hage W, Laurin A, Berkovitch L. Esketamine-induced post-traumatic stress disorder flashbacks during treatment-resistant depression indication: is it just a side effect? MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.01.09.24300998. [PMID: 38293161 PMCID: PMC10827260 DOI: 10.1101/2024.01.09.24300998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Background Posttraumatic stress disorder (PTSD) is a severe and frequent affection that is highly comorbid to major depressive disorder. Comorbid PTSD and depression are usually treatment-resistant, with a high risk of functional impairment and suicide. Esketamine nasal spray is a recent validated treatment for treatment-resistant depression (TRD), but its efficacy on comorbid TRD-PTSD remains insufficiently documented. In particular, flashbacks can occur during esketamine administration and their influence on clinical outcomes is unknown. Objectives Our main objective was to describe esketamine-induced traumatic flashbacks and their impact on clinical trajectories within a sample of patients with comorbid TRD-PTSD. Methods We retrospectively collected clinical data of patients receiving esketamine nasal spray for TRD with comorbid PTSD who experienced at least one flashback of their trauma during esketamine sessions across 11 psychiatric departments. Results Between February 2020 and March 2023, 22 adult patients with TRD met inclusion criteria. In sixteen patients (72.7%) flashbacks disappeared as the sessions progressed. In six patients (27.3%), esketamine treatment was stopped because of persistent flashbacks. When esketamine was continued, clinical response was observed both for depression and PTSD (depression response rate: 45.5% and remission rate: 22.7%; PTSD response rate: 45.5% and remission: 18.2%). Limitations The retrospective design of the study and the absence of a comparator group are the main limitations of our study. Conclusions Our results suggest that the occurrence of esketamine-induced traumatic flashbacks does not hinder clinical response. On the contrary, when managed appropriately and combined with targeted psychotherapy, it could even contribute to positive outcomes.
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Affiliation(s)
- Maud Rothärmel
- University Department of Psychiatry, Therapeutic Centre of Excellence, Institute of Psychiatry – Rouvray Hospital Centre, Sotteville-lès-Rouen, France
| | - Lila Mekaoui
- Mental and Brain Illness Clinic, Sainte-Anne Hospital, GHU Paris – Psychiatry and Neurosciences, Paris, France
| | - François Kazour
- Department of Psychiatry and Addictology, CHU Angers, Angers, France
| | - Morgane Herrero
- Department of Psychiatry, CHU Saint Etienne, Saint Etienne, France
| | | | - Aiste Lengvenyte
- Department of Emergency Psychiatry and Post-Acute Care, CHU Montpellier, France; IGF, Univ. Montpellier, CNRS, INSERM, Montpellier, France
| | - Jérôme Holtzmann
- Service de Psychiatrie de l’Adulte, Centre Expert Dépression Résistante FondaMental, CHU de Grenoble, hôpital Nord, Grenoble, France
| | | | - Macarena Cuenca
- University Department of Psychiatry, Pôle Hospitalo-Universitaire Psychiatrie Paris 15, Groupe Hospitalier Universitaire Paris, Paris, France
| | - Samuel Bulteau
- Nantes Université, CHU Nantes, INSERM, MethodS in Patients-centered outcomes and HEalth Research, SPHERE, F-44000 Nantes, France
| | - Pierre de Maricourt
- University Department of Psychiatry, Pôle Hospitalo-Universitaire Psychiatrie Paris 15, Groupe Hospitalier Universitaire Paris, Paris, France
| | - Thomas Husson
- University Department of Psychiatry, Therapeutic Centre of Excellence, Institute of Psychiatry – Rouvray Hospital Centre, Sotteville-lès-Rouen, France
| | - Emilie Olié
- Department of Emergency Psychiatry and Post-Acute Care, CHU Montpellier, France; IGF, Univ. Montpellier, CNRS, INSERM, Montpellier, France
| | - Bénédicte Gohier
- Department of Psychiatry and Addictology, CHU Angers, Angers, France
| | - Anne Sauvaget
- Nantes Université, CHU Nantes, INSERM, MethodS in Patients-centered outcomes and HEalth Research, SPHERE, F-44000 Nantes, France
| | - Raphaël Gaillard
- University Department of Psychiatry, Pôle Hospitalo-Universitaire Psychiatrie Paris 15, Groupe Hospitalier Universitaire Paris, Paris, France
| | - Raphaëlle Richieri
- Service Universitaire de santé mentale et physique, Centre Expert Dépression Résistante, CHU Sainte-Marguerite, APHM, Université Aix-Marseille, Marseille, France; Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, Marseille, France
| | - David Szekely
- Centre Hospitalier Princesse Grace, Service de psychiatrie, Principauté de Monaco
| | - Ludovic Samalin
- Department of Psychiatry, CHU Clermont-Ferrand, University of Clermont Auvergne, CNRS, Clermont Auvergne INP, Institut Pascal (UMR 6602), Clermont-Ferrand, France
| | - Olivier Guillin
- University Department of Psychiatry, Therapeutic Centre of Excellence, Institute of Psychiatry – Rouvray Hospital Centre, Sotteville-lès-Rouen, France
- CHU Rouen, Normandy University, Rouen, France
| | - Virginie Moulier
- University Department of Psychiatry, Therapeutic Centre of Excellence, Institute of Psychiatry – Rouvray Hospital Centre, Sotteville-lès-Rouen, France
- Unité de Recherche Clinique (URC), EPS Ville Evrard, Neuilly-sur-Marne, France
| | - Wissam El-Hage
- Centre Régional de Psychotraumatologie, Centre Hospitalier Régional
- Universitaire (CHRU) de Tours, Tours, France, 3 INSERM U1253 Imagerie et Cerveau (iBrain), Tours, France
| | - Andrew Laurin
- Nantes Université, CHU Nantes, INSERM, MethodS in Patients-centered outcomes and HEalth Research, SPHERE, F-44000 Nantes, France
| | - Lucie Berkovitch
- University Department of Psychiatry, Pôle Hospitalo-Universitaire Psychiatrie Paris 15, Groupe Hospitalier Universitaire Paris, Paris, France
- Paris Cité University, Paris, France
- Department of Psychiatry, Yale University School of Medicine, 40 Temple Street, New Haven, CT, 06511, United States
- Saclay CEA Centre, Neurospin, Gif-Sur-Yvette Cedex, France
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Alves-Pereira R, Fontes M, Cordeiro V, Bandeira ID, Faria-Guimarães D, Silva SS, Mello RP, Leal GC, Sampaio AS, Quarantini LC. Esketamine Augmentation in Treatment-Resistant Obsessive-Compulsive Disorder: A Retrospective Chart Review. Clin Neuropharmacol 2024; 47:17-21. [PMID: 38194244 DOI: 10.1097/wnf.0000000000000578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
OBJECTIVE Converging evidence supports the role of the glutamate, an excitatory amino acid neurotransmitter, in the pathophysiology of obsessive-compulsive disorder (OCD). Ketamine and esketamine, both noncompetitive N -methyl- d -aspartate antagonists, have emerged as a promising medication for this psychiatric disorder, given its possible efficacy with faster onset and good tolerability. The purpose of this retrospective chart review is to evaluate whether unbiased clinical documentation supports formal clinical trials of esketamine for an OCD indication. METHODS A retrospective chart review of patients with treatment-resistant OCD receiving a single dose of esketamine (0.5mg/kg) added to standard therapy was conducted. The Yale-Brown Obsessive-Compulsive Scale and the Montgomery-Åsberg Depression Rating Scale were used to evaluate OCD and depressive symptoms respectively at baseline, 24 hours, and 7 days after esketamine administration. Descriptive statistics were used to analyze the data. RESULTS Eight subjects were identified in this retrospective chart review: esketamine was administered subcutaneously in 7 and intravenously in 1. One week after infusion, 25% of the sample met criteria for treatment response and 50% for partial response. Major depressive disorder was a comorbid diagnosis in 75% of the sample and 2 of these subjects showed a positive antidepressant response. CONCLUSIONS Our findings provide preliminary evidence that esketamine may reduce obsessive-compulsive symptoms in a subset of treatment-resistant OCD patients.
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Affiliation(s)
| | | | | | | | - Daniela Faria-Guimarães
- Laboratório de Neuropsicofarmacologia, Serviço de Psiquiatria do Hospital Universitário Professor Edgard Santos, Universidade Federal da Bahia
| | - Samantha S Silva
- Laboratório de Neuropsicofarmacologia, Serviço de Psiquiatria do Hospital Universitário Professor Edgard Santos, Universidade Federal da Bahia
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Kawashima Y, Yamada M, Furuie H, Kuniishi H, Akagi K, Kawashima T, Noda T, Yamada M. Effects of riluzole on psychiatric disorders with anxiety or fear as primary symptoms: A systematic review. Neuropsychopharmacol Rep 2023; 43:320-327. [PMID: 37463744 PMCID: PMC10496048 DOI: 10.1002/npr2.12364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 05/31/2023] [Accepted: 06/19/2023] [Indexed: 07/20/2023] Open
Abstract
AIM Previous behavioral pharmacology studies involving rodents suggested riluzole had potential to be an ideal psychotropic drug for psychiatric disorders with anxiety or fear as primary symptoms. Several clinical studies have recently been conducted. The purpose of this study was to gather information about the efficacy and tolerability of riluzole for patients with those symptoms. METHODS We searched PubMed, PsycINFO, CINAHL, EMBASE, and the Cochrane database from inception until April 2021, and performed manual searches for additional relevant articles. This review included: (1) studies involving participants that were patients with generalized anxiety disorder (GAD), social anxiety disorder, panic disorder, obsessive-compulsive disorder (OCD), posttraumatic stress disorder (PTSD), acute stress disorder, or phobias; and (2) randomized controlled trials (RCTs) or intervention studies (e.g., single arm trials) examining the effects and safety of riluzole. RESULTS Of the 795 identified articles, four RCTs, one RCT subgroup-analysis, and three open-label trials without control groups met the inclusion criteria. Most trials evaluated the efficacy of riluzole as an augmentation therapy with selective serotonin reuptake inhibitors and other antidepressants for PTSD, OCD, or GAD. However, there was insufficient evidence to confirm the effects of riluzole for patients with these psychiatric disorders. Most trials demonstrated adequate study quality. CONCLUSIONS This review found insufficient evidence to confirm the effects of riluzole for psychiatric disorders with anxiety or fear as primary symptoms. It would be worthwhile to conduct studies that incorporate novel perspectives, such as examining the efficacy of riluzole as a concomitant medication for psychotherapy.
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Affiliation(s)
- Yoshitaka Kawashima
- Department of Neuropsychopharmacology, National Institute of Mental HealthNational Center of Neurology and PsychiatryTokyoJapan
- Clinical Psychology Course, Department of Psycho‐Social Studies, School of Arts and LettersMeiji UniversityTokyoJapan
| | - Misa Yamada
- Department of Neuropsychopharmacology, National Institute of Mental HealthNational Center of Neurology and PsychiatryTokyoJapan
| | - Hiroki Furuie
- Department of Neuropsychopharmacology, National Institute of Mental HealthNational Center of Neurology and PsychiatryTokyoJapan
| | - Hiroshi Kuniishi
- Department of Neuropsychopharmacology, National Institute of Mental HealthNational Center of Neurology and PsychiatryTokyoJapan
| | - Kie Akagi
- Department of Neuropsychopharmacology, National Institute of Mental HealthNational Center of Neurology and PsychiatryTokyoJapan
| | - Tomoko Kawashima
- Department of Neuropsychopharmacology, National Institute of Mental HealthNational Center of Neurology and PsychiatryTokyoJapan
| | - Takamasa Noda
- Department of Psychiatry, National Center HospitalNational Center of Neurology and PsychiatryTokyoJapan
| | - Mitsuhiko Yamada
- Department of Neuropsychopharmacology, National Institute of Mental HealthNational Center of Neurology and PsychiatryTokyoJapan
- Department of Pathophysiology, Faculty of Human NutritionTokyo Kasei Gakuin UniversityTokyoJapan
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Kew BM, Porter RJ, Douglas KM, Glue P, Mentzel CL, Beaglehole B. Ketamine and psychotherapy for the treatment of psychiatric disorders: systematic review. BJPsych Open 2023; 9:e79. [PMID: 37128856 DOI: 10.1192/bjo.2023.53] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/03/2023] Open
Abstract
BACKGROUND Ketamine is an effective short-term treatment for a range of psychiatric disorders. A key question is whether the addition of psychotherapy to ketamine treatment improves outcomes or delays relapse. AIM To identify all studies combining psychotherapy with ketamine for the treatment of psychiatric disorders to summarise their effects and make recommendations for future research. METHOD The review protocol was prospectively registered with PROSPERO (registration number CRD42022318120). Potential studies were searched for in MEDLINE, Embase, PsycINFO, SCOPUS, the Cochrane library and Google Scholar. Eligible studies combined ketamine and psychotherapy for the treatment of psychiatric disorders and did not use case reports or qualitative designs. Key findings relating to psychotherapy type, diagnosis, ketamine protocol, sequencing of psychotherapy and study design are reported. Risk of bias was assessed using modified Joanna Briggs critical appraisal tools. RESULTS Nineteen studies evaluating 1006 patients were included in the systematic review. A variety of supportive individual and group, manualised and non-manualised psychotherapies were used. The majority of studies evaluated substance use disorders, post-traumatic stress disorder and treatment-resistant depression. Ketamine protocols and sequencing of ketamine/psychotherapy treatment varied substantially between studies. Outcomes were largely positive for the addition of psychotherapy to ketamine treatment. CONCLUSION The combination of psychotherapy and ketamine offers promise for the treatment of psychiatric disorders, but study heterogeneity prevents definitive recommendations for their integration. Larger randomised controlled trials using manualised psychotherapies and standardised ketamine protocols are recommended to clarify the extent to which the addition of psychotherapy to ketamine improves outcomes over ketamine treatment alone.
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Affiliation(s)
- Bess M Kew
- Department of Psychological Medicine, University of Otago, Christchurch, New Zealand
| | - Richard J Porter
- Department of Psychological Medicine, University of Otago, Christchurch, New Zealand
| | - Katie M Douglas
- Department of Psychological Medicine, University of Otago, Christchurch, New Zealand
| | - Paul Glue
- Department of Psychological Medicine, University of Otago, Dunedin, New Zealand
| | - Charlotte L Mentzel
- Department of Psychological Medicine, University of Otago, Dunedin, New Zealand
| | - Ben Beaglehole
- Department of Psychological Medicine, University of Otago, Christchurch, New Zealand
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Bottemanne H, Arnould A, Najar A, Delaigue F, Serresse L, Joly L, Mouchabac S. [Combination of ketamine and esketamine with Exposure and Response Prevention (ERP) therapy for Obsessive-Compulsive Disorder]. L'ENCEPHALE 2023; 49:304-311. [PMID: 37095049 DOI: 10.1016/j.encep.2022.08.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/24/2022] [Accepted: 08/04/2022] [Indexed: 04/26/2023]
Abstract
Obsessive-Compulsive Disorder (OCD), characterized by the combination of obsession and compulsion, is a clinical and therapeutic challenge. Many patients with OCD do not respond to first-line treatments such as serotonin selective reuptake inhibitors (SSRIs) and exposure and response prevention psychotherapy (ERP). For these resistant patients, some preliminary studies have shown that ketamine, a non-selective glutamatergic NMDA receptors antagonist, could improve the obsessive symptoms. A number of these studies have also suggested that the combination of ketamine with ERP psychotherapy may jointly potentiate the effectiveness of ketamine and ERP. In this paper, we present the existing data on the combined use of ketamine with ERP psychotherapy for OCD. We suggest that modulation of NMDA receptor activity and glutamatergic signaling by ketamine may promote the therapeutic mechanisms involved in ERP such as fear extinction and brain plasticity mechanisms. Finally, we propose a ketamine-augmented ERP psychotherapy (KAP-ERP) protocol in OCD, and we present the limitations associated with its application in clinical practice.
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Affiliation(s)
- Hugo Bottemanne
- Paris Brain Institute - Institut du Cerveau (ICM), UMR 7225/UMRS 1127, Sorbonne University/CNRS/Inserm, Paris, France; Sorbonne University, Department of Philosophy, SND Research Unit, UMR 8011, CNRS, Paris, France; Department of Psychiatry, Pitié-Salpêtrière Hospital, Sorbonne University, DMU Neuroscience, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France.
| | - Alice Arnould
- Department of Psychiatry, Pitié-Salpêtrière Hospital, Sorbonne University, DMU Neuroscience, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Amaury Najar
- Department of Psychiatry, Pitié-Salpêtrière Hospital, Sorbonne University, DMU Neuroscience, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Fanny Delaigue
- Department of Psychiatry, Pitié-Salpêtrière Hospital, Sorbonne University, DMU Neuroscience, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Laure Serresse
- Sorbonne University, Unité Mobile d'Accompagnement et de Soins Palliatifs, Pitié-Salpêtrière Hospital, AP-HP, Paris, France
| | - Lucie Joly
- Paris Brain Institute - Institut du Cerveau (ICM), UMR 7225/UMRS 1127, Sorbonne University/CNRS/Inserm, Paris, France; Department of Psychiatry, Saint Antoine Hospital, Sorbonne University, DMU Neuroscience, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Stéphane Mouchabac
- Paris Brain Institute - Institut du Cerveau (ICM), UMR 7225/UMRS 1127, Sorbonne University/CNRS/Inserm, Paris, France; Department of Psychiatry, Saint Antoine Hospital, Sorbonne University, DMU Neuroscience, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
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8
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van Roessel PJ, Grassi G, Aboujaoude EN, Menchón JM, Van Ameringen M, Rodríguez CI. Treatment-resistant OCD: Pharmacotherapies in adults. Compr Psychiatry 2023; 120:152352. [PMID: 36368186 DOI: 10.1016/j.comppsych.2022.152352] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 09/20/2022] [Accepted: 10/24/2022] [Indexed: 12/13/2022] Open
Abstract
Serotonin reuptake inhibitor (SRI) medications are well established as first-line pharmacotherapeutic treatment for Obsessive-Compulsive Disorder (OCD). However, despite the excellent safety profile and demonstrated efficacy of these medications, a substantial proportion of individuals with OCD fail to attain sufficient benefit from SRIs. In this narrative review, we discuss clinical features of OCD that have been associated with poorer response to SRIs, and we present pharmacotherapeutic interventions that have been explored as augmenting or alternative treatments for treatment-resistant OCD. We additionally highlight non-SRI interventions for OCD that are currently under investigation. Pharmacotherapeutic interventions were identified via expert consensus. To assess the evidence base for individual pharmacotherapies, targeted searches for relevant English-language publications were performed on standard biomedical research databases, including MEDLINE. Information relevant to ongoing registered clinical trials in OCD was obtained by search of ClinicalTrials.gov. Pharmacotherapies are grouped for review in accordance with the general principles of Neuroscience-based Nomenclature (NbN). Clinical features of OCD that may suggest poorer response to SRI treatment include early age of onset, severity of illness, duration of untreated illness, and the presence of symmetry/ordering or hoarding-related symptoms. Based on evolving pathophysiologic models of OCD, diverse agents engaging serotonin, dopamine, norepinephrine, glutamate, and anti-inflammatory pathways have been explored as alternative or adjunctive therapies for treatment-resistant OCD and have at least preliminary evidence of efficacy. Medications with dopamine antagonist activity remain the most robustly evidence-based of augmenting interventions, yet dopamine antagonists benefit only a minority of those who try them and carry elevated risks of adverse effects. Interventions targeting glutamatergic and anti-inflammatory pathways are less well evidenced, but may offer more favorable benefit to risk profiles. Ongoing research should explore whether specific interventions may benefit individuals with particular features of treatment-resistant OCD.
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Affiliation(s)
- Peter J van Roessel
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA; Sierra Pacific Mental Illness Research, Education, and Clinical Center (MIRECC), VA Palo Alto Health Care System, Palo Alto, CA, USA.
| | | | - Elias N Aboujaoude
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA
| | - José M Menchón
- Department of Psychiatry, Bellvitge University Hospital-IDIBELL, University of Barcelona, Cibersam, Barcelona, Spain
| | - Michael Van Ameringen
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada
| | - Carolyn I Rodríguez
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA; Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA.
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Shivanekar S, Gopalan P, Pizon A, Spotts C, Cruz N, Lightfoot M, Rohac R, Baumeister A, Griffo A, Panny B, Kucherer S, Israel A, Rengasamy M, Price R. A Pilot Study of Ketamine Infusion after Suicide Attempt: New Frontiers in Treating Acute Suicidality in a Real-World Medical Setting. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:13792. [PMID: 36360672 PMCID: PMC9656070 DOI: 10.3390/ijerph192113792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/05/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
Ketamine, in research settings, rapidly reduces suicidal thoughts 2-24 h after a single infusion in patients with high suicidal ideation. In this study, the authors investigate ketamine's effects on suicidality in a real-world sample of recent suicide attempters on a tertiary-care Consultation-Liaison (CL) psychiatry service. Using an open-label design, 16 transdiagnostic CL patients were recruited, 18-65 years old, to receive a single dose of intravenous ketamine (0.5 mg/kg) in the acute medical setting. All were psychiatrically hospitalized post-infusion. Baseline suicidality and depression measures were compared to ratings taken at 24 h, 5 days, 12 days, and 1, 3 and 6 months post-infusion using paired t-tests. Across all measures, rapid, statistically significant decreases (p's < 0.001) were observed with large to very large effect sizes (Cohen's d's: 1.7-8.8) at acute timepoints (24 h; 5 days). These gains were uniformly maintained to 6 months post-infusion. Open-label ketamine appeared to rapidly and robustly reduced suicidal symptoms in an ultra-high-risk, heterogeneous, real-world sample. Ketamine infusion may therefore be a safe, feasible, viable method to rapidly reduce suicidality among medically hospitalized patients after a suicide attempt, with potentially enduring benefits. The current pilot findings suggest ketamine could be readily integrated into the settings where high-risk CL patients already receive healthcare, with the potential to become an important and novel tool in the treatment of suicidality.
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Affiliation(s)
- Sharvari Shivanekar
- Department of Psychiatry, University of Pittsburgh, 3811 O’Hara St, Pittsburgh, PA 15213, USA
| | - Priya Gopalan
- Department of Psychiatry, University of Pittsburgh, 3811 O’Hara St, Pittsburgh, PA 15213, USA
| | - Anthony Pizon
- Department of Emergency Medicine, Division of Medical Toxicology, University of Pittsburgh, 3600 Forbes at Meyran Avenue, Forbes Tower, Suite 10028, Pittsburgh, PA 15213, USA
| | - Crystal Spotts
- Department of Psychiatry, University of Pittsburgh, 3811 O’Hara St, Pittsburgh, PA 15213, USA
| | - Nicolas Cruz
- Department of Psychiatry, University of Pittsburgh, 3811 O’Hara St, Pittsburgh, PA 15213, USA
| | - Michael Lightfoot
- Department of Psychiatry, University of Pittsburgh, 3811 O’Hara St, Pittsburgh, PA 15213, USA
| | - Rebecca Rohac
- Department of Psychiatry, University of Pittsburgh, 3811 O’Hara St, Pittsburgh, PA 15213, USA
| | - Andrew Baumeister
- Department of Psychiatry, University of Pittsburgh, 3811 O’Hara St, Pittsburgh, PA 15213, USA
| | - Angela Griffo
- Department of Psychiatry, University of Pittsburgh, 3811 O’Hara St, Pittsburgh, PA 15213, USA
| | - Benjamin Panny
- Department of Psychiatry, University of Pittsburgh, 3811 O’Hara St, Pittsburgh, PA 15213, USA
| | - Shelly Kucherer
- Department of Psychiatry, University of Pittsburgh, 3811 O’Hara St, Pittsburgh, PA 15213, USA
| | - Alex Israel
- Department of Psychiatry, University of Pittsburgh, 3811 O’Hara St, Pittsburgh, PA 15213, USA
| | - Manivel Rengasamy
- Department of Psychiatry, University of Pittsburgh, 3811 O’Hara St, Pittsburgh, PA 15213, USA
| | - Rebecca Price
- Department of Psychiatry, University of Pittsburgh, 3811 O’Hara St, Pittsburgh, PA 15213, USA
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10
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Paredes D, Knippenberg AR, Bulin SE, Keppler LJ, Morilak DA. Adjunct treatment with ketamine enhances the therapeutic effects of extinction learning after chronic unpredictable stress. Neurobiol Stress 2022; 19:100468. [PMID: 35865972 PMCID: PMC9293662 DOI: 10.1016/j.ynstr.2022.100468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 06/09/2022] [Accepted: 07/05/2022] [Indexed: 12/31/2022] Open
Abstract
Post-traumatic stress disorder (PTSD) is a debilitating illness characterized by dysfunction in the medial prefrontal cortex (mPFC). Although both pharmacological and cognitive behavioral interventions have shown some promise at alleviating symptoms, high attrition and persistence of treatment-resistant symptoms pose significant challenges that remain unresolved. Specifically, prolonged exposure therapy, a gold standard intervention to treat PTSD, has high dropout rates resulting in many patients receiving less than a fully effective course of treatment. Administering pharmacological treatments together with behavioral psychotherapies like prolonged exposure may offer an important avenue for enhancing therapeutic efficacy sooner, thus reducing the duration of treatment and mitigating the impact of attrition. In this study, using extinction learning as a rat model of exposure therapy, we hypothesized that administering ketamine as an adjunct treatment together with extinction will enhance the efficacy of extinction in reversing stress-induced deficits in set shifting, a measure of cognitive flexibility. Results showed that combining a sub-effective dose of ketamine with a shortened, sub-effective extinction protocol fully reversed stress-induced cognitive set-shifting deficits in both male and female rats. These effects may be due to shared molecular mechanisms between extinction and ketamine, such as increased neuronal plasticity in common circuitry (e.g., hippocampus-mPFC), or increased BDNF signaling. This work suggests that fast-acting drugs, such as ketamine, can be effectively used in combination with behavioral interventions to reduce treatment duration and potentially mitigate the impact of attrition. Future work is needed to delineate other pharmacotherapies that may complement the effects of extinction via shared or independent mechanisms.
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Affiliation(s)
- Denisse Paredes
- Department of Pharmacology and Center for Biomedical Neuroscience, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX, 78229, USA
| | - Anna R. Knippenberg
- Department of Pharmacology and Center for Biomedical Neuroscience, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX, 78229, USA
| | - Sarah E. Bulin
- Department of Pharmacology and Center for Biomedical Neuroscience, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX, 78229, USA
| | - Lydia J. Keppler
- Department of Pharmacology and Center for Biomedical Neuroscience, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX, 78229, USA
| | - David A. Morilak
- Department of Pharmacology and Center for Biomedical Neuroscience, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX, 78229, USA
- South Texas Veterans Health Care System, San Antonio, TX, 78229, USA
- Corresponding author. Department of Pharmacology, Mail Code 7764 University of Texas Health Science Center, San Antonio 7703 Floyd Curl Drive, San Antonio, TX, 78229-3900, USA
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11
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Drozdz SJ, Goel A, McGarr MW, Katz J, Ritvo P, Mattina GF, Bhat V, Diep C, Ladha KS. Ketamine Assisted Psychotherapy: A Systematic Narrative Review of the Literature. J Pain Res 2022; 15:1691-1706. [PMID: 35734507 PMCID: PMC9207256 DOI: 10.2147/jpr.s360733] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 04/20/2022] [Indexed: 11/23/2022] Open
Abstract
Currently, ketamine is used in treating multiple pain, mental health, and substance abuse disorders due to rapid-acting analgesic and antidepressant effects. Its limited short-term durability has motivated research into the potential synergistic actions between ketamine and psychotherapy to sustain benefits. This systematic review on ketamine-assisted psychotherapy (KAP) summarizes existing evidence regarding present-day practices. Through rigorous review, seventeen articles that included 603 participants were identified. From available KAP publications, it is apparent that combined treatments can, in specific circumstances, initiate and prolong clinically significant reductions in pain, anxiety, and depressive symptoms, while encouraging rapport and treatment engagement, and promoting abstinence in patients addicted to other substances. Despite much variance in how KAP is applied (route of ketamine administration, ketamine dosage/frequency, psychotherapy modality, overall treatment length), these findings suggest psychotherapy, provided before, during, and following ketamine sessions, can maximize and prolong benefits. Additional large-scale randomized control trials are warranted to understand better the mutually influential relationships between psychotherapy and ketamine in optimizing responsiveness and sustaining long-term benefits in patients with chronic pain. Such investigations will assist in developing standardized practices and maintenance programs.
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Affiliation(s)
- Sandra J Drozdz
- Department of Anesthesia, St. Michael's Hospital, Toronto, ON, Canada
| | - Akash Goel
- Department of Anesthesia, St. Michael's Hospital, Toronto, ON, Canada.,Department of Anesthesiology, Pain and Perioperative Medicine, Stanford University, Stanford, CA, USA.,Department of Anesthesiology and Pain Medicine, University of Toronto, Toronto, ON, Canada
| | - Matthew W McGarr
- Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Joel Katz
- Department of Anesthesiology and Pain Medicine, University of Toronto, Toronto, ON, Canada.,Department of Psychology, York University, Toronto, ON, Canada.,Department of Anesthesia and Pain Management, University Health Network, Toronto, ON, Canada.,School of Kinesiology and Health Science, York University, Toronto, ON, Canada
| | - Paul Ritvo
- Department of Psychology, York University, Toronto, ON, Canada.,School of Kinesiology and Health Science, York University, Toronto, ON, Canada
| | | | - Venkat Bhat
- Interventional Psychiatry Program, St. Michael's Hospital, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON, Canada
| | - Calvin Diep
- Department of Anesthesiology and Pain Medicine, University of Toronto, Toronto, ON, Canada
| | - Karim S Ladha
- Department of Anesthesia, St. Michael's Hospital, Toronto, ON, Canada.,Department of Anesthesiology and Pain Medicine, University of Toronto, Toronto, ON, Canada.,Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON, Canada
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12
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Mathai DS, Mora V, Garcia-Romeu A. Toward Synergies of Ketamine and Psychotherapy. Front Psychol 2022; 13:868103. [PMID: 35401323 PMCID: PMC8992793 DOI: 10.3389/fpsyg.2022.868103] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 02/25/2022] [Indexed: 12/13/2022] Open
Abstract
Ketamine is a dissociative drug that has been used medically since the 1970s primarily as an anesthetic agent but also for various psychiatric applications. Anecdotal reports and clinical research suggest substantial potential for ketamine as a treatment in conjunction with psychological interventions. Here, we review historical and modern approaches to the use of ketamine with psychotherapy, discuss the clinical relevance of ketamine’s acute psychoactive effects, propose a unique model for using esketamine (one isomeric form of ketamine) with Acceptance and Commitment Therapy (ACT), and suggest considerations for moving medication-assisted psychotherapy forward as a field.
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Affiliation(s)
- David S Mathai
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Victoria Mora
- School of Health Professions, Baylor College of Medicine, Houston, TX, United States
| | - Albert Garcia-Romeu
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, United States
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13
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Abstract
INTRODUCTION First-line treatment for obsessive-compulsive disorder (OCD) includes exposure and response prevention behavioral therapy and serotonin reuptake inhibitors, particularly in combination. New and more effective treatments are needed, give that recent studies suggest that glutamatergic neurotransmission contributes to the pathophysiology of the disorder. In these circumstances, ketamine, as a potent N-methyl-D-aspartate receptor antagonist and glutamate modulator, offers alternative possibilities for OCD treatment. METHODS This systematic review aims to investigate the effects of ketamine in OCD, following the Preferred Reporting Items for Systematic Review and Meta-analyses Protocols (PRISMA-P). Searches were carried out using the PubMed/MEDLINE, Embase, and PsycINFO databases. RESULTS Nine articles were included, of which three were randomized controlled trials, three case reports, two open-label trials, and one a retrospective chart review. Reported data have shown a potential for fast onset of action and good tolerability of ketamine for OCD, even though the principal studies used only single-session racemic ketamine treatments, administered intravenously, and the results have been erratic. In addition, none of the available evidence demonstrates whether racemic ketamine, S-ketamine, or R-ketamine has the best efficacy in controlling OCD symptoms, and only sparse evidence suggests that a combination of ketamine and psychotherapy could benefit patients with OCD. CONCLUSION In order to advance clinical practice regarding the use of ketamine in treating OCD, future randomized, double-blind, placebo-controlled trials are required. These trials need to use larger samples to explore ketamine and its enantiomers, with different methods of administration, multiple sessions, and appropriate washout periods.
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14
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Walsh Z, Mollaahmetoglu OM, Rootman J, Golsof S, Keeler J, Marsh B, Nutt DJ, Morgan CJA. Ketamine for the treatment of mental health and substance use disorders: comprehensive systematic review. BJPsych Open 2021; 8:e19. [PMID: 35048815 PMCID: PMC8715255 DOI: 10.1192/bjo.2021.1061] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND In the past two decades, subanaesthetic doses of ketamine have been demonstrated to have rapid and sustained antidepressant effects, and accumulating research has demonstrated ketamine's therapeutic effects for a range of psychiatric conditions. AIMS In light of these findings surrounding ketamine's psychotherapeutic potential, we systematically review the extant evidence on ketamine's effects in treating mental health disorders. METHOD The systematic review protocol was registered in PROSPERO (identifier CRD42019130636). Human studies investigating the therapeutic effects of ketamine in the treatment of mental health disorders were included. Because of the extensive research in depression, bipolar disorder and suicidal ideation, only systematic reviews and meta-analyses were included. We searched Medline and PsycINFO on 21 October 2020. Risk-of-bias analysis was assessed with the Cochrane Risk of Bias tools and A Measurement Tool to Assess Systematic Reviews (AMSTAR) Checklist. RESULTS We included 83 published reports in the final review: 33 systematic reviews, 29 randomised controlled trials, two randomised trials without placebo, three non-randomised trials with controls, six open-label trials and ten retrospective reviews. The results were presented via narrative synthesis. CONCLUSIONS Systematic reviews and meta-analyses provide support for robust, rapid and transient antidepressant and anti-suicidal effects of ketamine. Evidence for other indications is less robust, but suggests similarly positive and short-lived effects. The conclusions should be interpreted with caution because of the high risk of bias of included studies. Optimal dosing, modes of administration and the most effective forms of adjunctive psychotherapeutic support should be examined further.
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Affiliation(s)
- Zach Walsh
- Department of Psychology, University of British Columbia, Canada
| | | | - Joseph Rootman
- Department of Psychology, University of British Columbia, Canada
| | - Shannon Golsof
- Department of Psychology, University of British Columbia, Canada
| | - Johanna Keeler
- Eating Disorders Research Group, Department of Psychological Medicine, Institute of Psychiatry, Psychology & Neuroscience, Kings College London, UK
| | - Beth Marsh
- Psychopharmacology and Addiction Research Centre, Department of Psychology, University of Exeter, UK; and Clinical Psychopharmacology Unit, Department of Clinical, Educational and Health Psychology, University College London, UK
| | - David J Nutt
- Drug Science, UK; and Neuropsychopharmacology Unit, Division of Psychiatry, Department of Brain Sciences, Imperial College London, UK
| | - Celia J A Morgan
- Psychopharmacology and Addiction Research Centre, Department of Psychology, University of Exeter, UK
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15
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[Ketamine Augmented Psychotherapy (KAP) in mood disorder: User guide]. Encephale 2021; 48:304-312. [PMID: 34876279 DOI: 10.1016/j.encep.2021.08.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 06/30/2021] [Accepted: 08/20/2021] [Indexed: 01/02/2023]
Abstract
Ketamine, a non-competitive NMDA receptor antagonist, is used as a fast-acting antidepressant therapy in depressive disorders. This treatment provokes dissociative effects associating derealization and depersonalization, and a synaptogenic signaling cascade promoting brain plasticity. Despite several preliminary studies suggesting the usefulness of its combination with psychotherapy, administration of ketamine isn't generally combined with per- and post-infusion psychotherapy protocols in its clinical antidepressant use. However, the phenomenology of psychodysleptic experiences and the synaptogenic effect could potentiate cognitive and behavioral therapies (CBT). In this article, we purpose a practical protocol to Ketamine Augmented Psychotherapy (KAP) synthesizing contemporary data from the literature and our clinical experience. We detail proposals for clinical practice, and propose four important steps for the use of a psychodysleptic molecule for antidepressant purposes: preparation, administration, integration, and prolongation. Finally, we discuss the limits and prospects of this combination in the management of mood disorders.
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16
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Bottemanne H, Arnould A. Ketamine Augmentation of Exposure Response Prevention Therapy for Obsessive-compulsive Disorder. INNOVATIONS IN CLINICAL NEUROSCIENCE 2021; 18:9-11. [PMID: 35096475 PMCID: PMC8794478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Obsessive-compulsive disorder (OCD) is a disabling disease characterized by intrusive thoughts, with compulsions performed to lessen distress. Many patients with OCD do not respond to first-line intervention, such as serotonin reuptake inhibitors (SRIs) and exposure and response prevention (ERP) therapy. Previous studies have focused on the use of ketamine, a nonselective N-methyl D-aspartate receptor (NMDAR) antagonist, for treatment-resistant OCD. Research has shown that ketamine modulates NMDARs and gamma-aminobutyric acid receptors (GABAR), which are major pathways for contingency-learning, belief updating, and extinction learning. Here, we propose an augmented psychotherapy (AP) protocol combining ERP intervention with administration of ketamine. We describe the theory that NMDAR modulation might directly promote the therapeutic mechanisms involved in exposure and discuss the possibility that ketamine plasticity enhancement might potentiate extinction-based psychotherapy in the treatment of OCD.
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Affiliation(s)
- Hugo Bottemanne
- Dr. Bottemanne and Ms. Arnould are with Sorbonne University, Paris Brain Institute-Institut du Cerveau (ICM), and Department of Psychiatry (Pitié-Salpêtrière Hospital, APHP) in Paris, France
| | - Alice Arnould
- Dr. Bottemanne and Ms. Arnould are with Sorbonne University, Paris Brain Institute-Institut du Cerveau (ICM), and Department of Psychiatry (Pitié-Salpêtrière Hospital, APHP) in Paris, France
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17
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Martinotti G, Chiappini S, Pettorruso M, Mosca A, Miuli A, Di Carlo F, D’Andrea G, Collevecchio R, Di Muzio I, Sensi SL, Di Giannantonio M. Therapeutic Potentials of Ketamine and Esketamine in Obsessive-Compulsive Disorder (OCD), Substance Use Disorders (SUD) and Eating Disorders (ED): A Review of the Current Literature. Brain Sci 2021; 11:856. [PMID: 34199023 PMCID: PMC8301752 DOI: 10.3390/brainsci11070856] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/10/2021] [Accepted: 06/22/2021] [Indexed: 12/17/2022] Open
Abstract
The obsessive-compulsive spectrum refers to disorders drawn from several diagnostic categories that share core features related to obsessive-compulsive disorder (OCD), such as obsessive thoughts, compulsive behaviors and anxiety. Disorders that include these features can be grouped according to the focus of the symptoms, e.g., bodily preoccupation (i.e., eating disorders, ED) or impulse control (i.e., substance use disorders, SUD), and they exhibit intriguing similarities in phenomenology, etiology, pathophysiology, patient characteristics and clinical outcomes. The non-competitive N-methyl-D-aspartate receptor (NMDAr) antagonist ketamine has been indicated to produce remarkable results in patients with treatment-resistant depression, post-traumatic stress disorder and OCD in dozens of small studies accrued over the past decade, and it appears to be promising in the treatment of SUD and ED. However, despite many small studies, solid evidence for the benefits of its use in the treatment of OCD spectrum and addiction is still lacking. Thus, the aim of this perspective article is to examine the potential for ketamine and esketamine in treating OCD, ED and SUD, which all involve recurring and intrusive thoughts and generate associated compulsive behavior. A comprehensive and updated overview of the literature regarding the pharmacological mechanisms of action of both ketamine and esketamine, as well as their therapeutic advantages over current treatments, are provided in this paper. An electronic search was performed, including all papers published up to April 2021, using the following keywords ("ketamine" or "esketamine") AND ("obsessive" OR "compulsive" OR "OCD" OR "SUD" OR "substance use disorder" OR "addiction" OR "craving" OR "eating" OR "anorexia") NOT review NOT animal NOT "in vitro", on the PubMed, Cochrane Library and Web of Science online databases. The review was conducted in accordance with preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines. The use and efficacy of ketamine in SUD, ED and OCD is supported by glutamatergic neurotransmission dysregulation, which plays an important role in these conditions. Ketamine's use is increasing, and preliminary data are optimistic. Further studies are needed in order to better clarify the many unknowns related to the use of both ketamine and esketamine in SUD, ED and OCD, and to understand their long-term effectiveness.
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Affiliation(s)
- Giovanni Martinotti
- Department of Neurosciences, Imaging and Clinical Sciences, Università degli Studi G. D’Annunzio, 66100 Chieti-Pescara, Italy; (G.M.); (S.C.); (A.M.); (A.M.); (F.D.C.); (G.D.); (R.C.); (I.D.M.); (S.L.S.); (M.D.G.)
- Psychopharmacology, Drug Misuse and Novel Psychoactive Substances Research Unit, School of Life and Medical Sciences, University of Hertfordshire, Hertfordshire AL10 9AB, UK
| | - Stefania Chiappini
- Department of Neurosciences, Imaging and Clinical Sciences, Università degli Studi G. D’Annunzio, 66100 Chieti-Pescara, Italy; (G.M.); (S.C.); (A.M.); (A.M.); (F.D.C.); (G.D.); (R.C.); (I.D.M.); (S.L.S.); (M.D.G.)
- Psychopharmacology, Drug Misuse and Novel Psychoactive Substances Research Unit, School of Life and Medical Sciences, University of Hertfordshire, Hertfordshire AL10 9AB, UK
| | - Mauro Pettorruso
- Department of Neurosciences, Imaging and Clinical Sciences, Università degli Studi G. D’Annunzio, 66100 Chieti-Pescara, Italy; (G.M.); (S.C.); (A.M.); (A.M.); (F.D.C.); (G.D.); (R.C.); (I.D.M.); (S.L.S.); (M.D.G.)
| | - Alessio Mosca
- Department of Neurosciences, Imaging and Clinical Sciences, Università degli Studi G. D’Annunzio, 66100 Chieti-Pescara, Italy; (G.M.); (S.C.); (A.M.); (A.M.); (F.D.C.); (G.D.); (R.C.); (I.D.M.); (S.L.S.); (M.D.G.)
| | - Andrea Miuli
- Department of Neurosciences, Imaging and Clinical Sciences, Università degli Studi G. D’Annunzio, 66100 Chieti-Pescara, Italy; (G.M.); (S.C.); (A.M.); (A.M.); (F.D.C.); (G.D.); (R.C.); (I.D.M.); (S.L.S.); (M.D.G.)
| | - Francesco Di Carlo
- Department of Neurosciences, Imaging and Clinical Sciences, Università degli Studi G. D’Annunzio, 66100 Chieti-Pescara, Italy; (G.M.); (S.C.); (A.M.); (A.M.); (F.D.C.); (G.D.); (R.C.); (I.D.M.); (S.L.S.); (M.D.G.)
| | - Giacomo D’Andrea
- Department of Neurosciences, Imaging and Clinical Sciences, Università degli Studi G. D’Annunzio, 66100 Chieti-Pescara, Italy; (G.M.); (S.C.); (A.M.); (A.M.); (F.D.C.); (G.D.); (R.C.); (I.D.M.); (S.L.S.); (M.D.G.)
| | - Roberta Collevecchio
- Department of Neurosciences, Imaging and Clinical Sciences, Università degli Studi G. D’Annunzio, 66100 Chieti-Pescara, Italy; (G.M.); (S.C.); (A.M.); (A.M.); (F.D.C.); (G.D.); (R.C.); (I.D.M.); (S.L.S.); (M.D.G.)
| | - Ilenia Di Muzio
- Department of Neurosciences, Imaging and Clinical Sciences, Università degli Studi G. D’Annunzio, 66100 Chieti-Pescara, Italy; (G.M.); (S.C.); (A.M.); (A.M.); (F.D.C.); (G.D.); (R.C.); (I.D.M.); (S.L.S.); (M.D.G.)
| | - Stefano L. Sensi
- Department of Neurosciences, Imaging and Clinical Sciences, Università degli Studi G. D’Annunzio, 66100 Chieti-Pescara, Italy; (G.M.); (S.C.); (A.M.); (A.M.); (F.D.C.); (G.D.); (R.C.); (I.D.M.); (S.L.S.); (M.D.G.)
| | - Massimo Di Giannantonio
- Department of Neurosciences, Imaging and Clinical Sciences, Università degli Studi G. D’Annunzio, 66100 Chieti-Pescara, Italy; (G.M.); (S.C.); (A.M.); (A.M.); (F.D.C.); (G.D.); (R.C.); (I.D.M.); (S.L.S.); (M.D.G.)
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18
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Pittenger C, Brennan BP, Koran L, Mathews CA, Nestadt G, Pato M, Phillips KA, Rodriguez CI, Simpson HB, Skapinakis P, Stein DJ, Storch EA. Specialty knowledge and competency standards for pharmacotherapy for adult obsessive-compulsive disorder. Psychiatry Res 2021; 300:113853. [PMID: 33975093 PMCID: PMC8536398 DOI: 10.1016/j.psychres.2021.113853] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 03/01/2021] [Indexed: 12/12/2022]
Abstract
Obsessive-compulsive disorder (OCD) affects approximately one person in 40 and causes substantial suffering. Evidence-based treatments can benefit many; however, optimal treatment can be difficult to access. Diagnosis is frequently delayed, and pharmacological and psychotherapeutic interventions often fail to follow evidence-based guidelines. To ameliorate this distressing situation, the International OCD Accreditation Task Force of the Canadian Institute for Obsessive-Compulsive Disorders has developed knowledge and competency standards for specialized treatments for OCD through the lifespan. These are foundational to evidence-based practice and will form the basis for upcoming ATF development of certification/accreditation programs. Here, we present specialty standards for the pharmacological treatment of adult OCD. We emphasize the importance of integrating pharmacotherapy with clear diagnosis, appreciation of complicating factors, and evidence-based cognitive behavioral therapy. Clear evidence exists to inform first- and second-line pharmacological treatments. In disease refractory to these initial efforts, multiple strategies have been investigated, but the evidence is more equivocal. These standards summarize this limited evidence to give the specialist practitioner a solid basis on which to make difficult decisions in complex cases. It is hoped that further research will lead to development of a clear, multi-step treatment algorithm to support each step in clinical decision-making.
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Affiliation(s)
- Christopher Pittenger
- Department of Psychiatry and Yale Child Study Center, Yale University School of Medicine, New Haven, CT, United States.
| | - Brian P Brennan
- Biological Psychiatry Laboratory and Obsessive-Compulsive Disorder Institute, McLean Hospital, Belmont, MA, United States; Department of Psychiatry, Harvard Medical School, Boston, MA, United States
| | - Lorrin Koran
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA, United States
| | - Carol A Mathews
- Department of Psychiatry, University of Florida, Gainesville, FL, United States
| | - Gerald Nestadt
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Michele Pato
- Institute for Genomic Health and Department of Psychiatry, SUNY Downstate College of Medicine, Brooklyn, NY, United States
| | - Katharine A Phillips
- Department of Psychiatry and Human Behavior, Warren Alpert Medical School of Brown University, Providence, RI, and Department of Psychiatry, Weill Cornell Medical College, New York, NY, United States
| | - Carolyn I Rodriguez
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA, United States; Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, United States
| | - H Blair Simpson
- Department of Psychiatry, Columbia University Vagelos College of Physicians and Surgeons, New York, NY, United States; Office of Mental Health, Research Foundation for Mental Hygiene, New York Psychiatric Institute, New York, NY, United States
| | - Petros Skapinakis
- Department of Psychiatry, School of Health Sciences, University of Ioannina, Ioannina, Greece
| | - Dan J Stein
- Department of Psychiatry and Neuroscience Institute, University of Cape Town, Cape Town, South Africa
| | - Eric A Storch
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, United States
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Williams MT, Reed S, George J. Culture and psychedelic psychotherapy: Ethnic and racial themes from three Black women therapists. JOURNAL OF PSYCHEDELIC STUDIES 2021. [DOI: 10.1556/2054.2020.00137] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
AbstractPsychedelic medicine is an emerging field of research and practice that examines the psychotherapeutic effects of substances classified as hallucinogens on the human mind, body, and spirit. Current research explores the safety and efficacy of these substances for mental health disorders including anxiety, depression, and posttraumatic stress disorder (PTSD). Although current studies explore psychotherapeutic effects from a biomedical perspective, gaps in awareness around cultural issues in the therapeutic process are prominent. African Americans have been absent from psychedelic research as both participants and researchers, and little attention has been paid to the potential of psychedelics to address traumas caused by racialization. This paper examines cultural themes and clinical applications from the one-time use of 3,4-methylenedioxymethamphetamine (MDMA) as part of an US Food and Drug Administration (FDA)-approved clinical trial and training exercise for three African American female therapists. The primary themes that emerged across the varied experiences centered on strength, safety, connection, and managing oppression/racialization. The participants' experiences were found to be personally meaningful and instructive for how Western models of psychedelic-assisted psychotherapy could be more effective and accessible to the Black community. Included is a discussion of the importance of facilitator training to make best use of emerging material when it includes cultural, racial, and spiritual themes. A lack of knowledge and epistemic humility can create barriers to treatment for underserved populations. Implications for future research and practice for marginalized cultural groups are also discussed, including consideration of Functional Analytic Psychotherapy (FAP) as an adjunct to the psychedelic-therapy approaches currently advanced. As women of color are among the most stigmatized groups of people, it is essential to incorporate their perspectives into the literature to expand conversations about health equity.
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Affiliation(s)
- Monnica T. Williams
- 1Department of Psychological Sciences, University of Connecticut, Storrs, CT, USA
- 2Behavioral Wellness Clinic, LLC, Tolland, CT, USA
- 3School of Psychology, University of Ottawa, Ottawa, ON, Canada
| | - Sara Reed
- 1Department of Psychological Sciences, University of Connecticut, Storrs, CT, USA
- 2Behavioral Wellness Clinic, LLC, Tolland, CT, USA
| | - Jamilah George
- 1Department of Psychological Sciences, University of Connecticut, Storrs, CT, USA
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20
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Grassi G, Cecchelli C, Vignozzi L, Pacini S. Investigational and Experimental Drugs to Treat Obsessive-Compulsive Disorder. J Exp Pharmacol 2021; 12:695-706. [PMID: 33447096 PMCID: PMC7801912 DOI: 10.2147/jep.s255375] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 12/12/2020] [Indexed: 12/13/2022] Open
Abstract
Treatment-resistance is a frequent condition for obsessive-compulsive disorder (OCD). Over the past decades, a lot of effort has been made to address this issue, and several augmentation strategies of serotonergic drugs have been investigated. Antidopaminergic drugs are considered the first choice as augmentation strategy for treatment-resistant OCD patients, but they seem to work only for a subset of patients, and none of them have been officially approved for OCD. Recently, the role of glutamate and inflammation in OCD pathophysiology clearly emerged, and this has led to several investigations on glutamatergic and anti-inflammatory agents. Results seem promising but still inconclusive. Probiotic interventions (considered to modulate the immune systems and the brain activity) are gaining attention in several psychiatric fields but are still at their early stages in the OCD field. Research on new treatment approaches for OCD is moving forward, and more than one hundred interventional trials are ongoing around the world. While the vast majority of these trials involve neuromodulation and psychotherapeutic approaches, only a small proportion (around 20%) involve the investigation of new pharmacological approaches (tolcapone, nabilone, psilocybin, troriluzole, nitrous oxide, rituximab, naproxen, and immunoglobulins). Here, we provide a comprehensive review of investigational and experimental drugs to treat OCD.
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Affiliation(s)
- Giacomo Grassi
- Neuroscience Department, Brain Center Firenze, Florence, Italy
| | | | - Luisa Vignozzi
- Neuroscience Department, Brain Center Firenze, Florence, Italy
| | - Silvia Pacini
- Neuroscience Department, Brain Center Firenze, Florence, Italy
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21
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Abstract
Effective pharmacological and psychotherapeutic treatments are well established for obsessive-compulsive disorder (OCD). Serotonin reuptake inhibitors (SRIs) are first-line treatment and are of benefit to about half of patients. Augmentation of SRI treatment with low-dose neuroleptics is an evidence-based second-line strategy. Specialty psychotherapy is also used as both first-line and second-line treatment and can benefit many. However, a substantial number of patients do not respond to these treatments. New alternatives are urgently needed. This review summarizes evidence for these established pharmacotherapeutic strategies, and for others that have been investigated in refractory disease but are not supported by the same level of evidence. We focus on three neurotransmitter systems in the brain: serotonin, dopamine, and glutamate. We summarize evidence from genetic, neuroimaging, animal model, and other lines of investigation that probe these three systems in patients with OCD. We also review recent work on predictors of response to current treatments. While many studies suggest abnormalities that may provide insight into the pathophysiology of the disorder, most studies have been small, and non-replication of reported findings has been common. Nevertheless, the gradual accrual of evidence for neurotransmitter dysregulation may in time lead the way to new pharmacological strategies.
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22
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Kayser RR, Raskin M, Snorrason I, Hezel DM, Haney M, Simpson HB. Cannabinoid Augmentation of Exposure-Based Psychotherapy for Obsessive-Compulsive Disorder. J Clin Psychopharmacol 2020; 40:207-210. [PMID: 32068563 PMCID: PMC7206660 DOI: 10.1097/jcp.0000000000001179] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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23
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Sharma LP, Thamby A, Balachander S, Janardhanan CN, Jaisoorya TS, Arumugham SS, Reddy YCJ. Clinical utility of repeated intravenous ketamine treatment for resistant obsessive-compulsive disorder. Asian J Psychiatr 2020; 52:102183. [PMID: 32554207 DOI: 10.1016/j.ajp.2020.102183] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 05/12/2020] [Accepted: 05/26/2020] [Indexed: 11/17/2022]
Abstract
Glutamate modulators are used to treat OCD resistant to serotonin reuptake inhibitors (SRIs). Ketamine has shown some promise in treating OCD. Data on the use of ketamine in SRI-resistant OCD is limited, with no studies on the role of multiple ketamine infusions in this disorder. We report our experience of treating SRI- resistant OCD with multiple ketamine infusions. We reviewed the clinical charts of 14 adult inpatients with a diagnosis of SRI-resistant OCD and treated them with repeated ketamine infusions [mean (SD) = 5.4 (2.5)]. There was a significant reduction in the Yale-Brown Obsessive-Compulsive Scale (YBOCS) total score following intravenous ketamine infusions. One patient showed a dramatic response (a drop in the YBOCS to '0') and two patients showed a partial response (25-35 % reduction in the YBOCS). Eleven patients showed no clinical improvement. Ketamine may, therefore, be somewhat effective in a subset of OCD patients who are resistant to SRIs. Our findings suggest the need to examine the efficacy of ketamine in controlled studies with larger samples. It may be possible to identify predictors of response to ketamine in larger studies.
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Affiliation(s)
- Lavanya P Sharma
- OCD Clinic, Department of Psychiatry, National Institute of Mental Health and NeuroSciences (NIMHANS), Hosur Road, Bangalore, India
| | - Abel Thamby
- OCD Clinic, Department of Psychiatry, National Institute of Mental Health and NeuroSciences (NIMHANS), Hosur Road, Bangalore, India
| | - Srinivas Balachander
- OCD Clinic, Department of Psychiatry, National Institute of Mental Health and NeuroSciences (NIMHANS), Hosur Road, Bangalore, India
| | - C Narayanaswamy Janardhanan
- OCD Clinic, Department of Psychiatry, National Institute of Mental Health and NeuroSciences (NIMHANS), Hosur Road, Bangalore, India
| | - T S Jaisoorya
- OCD Clinic, Department of Psychiatry, National Institute of Mental Health and NeuroSciences (NIMHANS), Hosur Road, Bangalore, India
| | - Shyam Sundar Arumugham
- OCD Clinic, Department of Psychiatry, National Institute of Mental Health and NeuroSciences (NIMHANS), Hosur Road, Bangalore, India
| | - Y C Janardhan Reddy
- OCD Clinic, Department of Psychiatry, National Institute of Mental Health and NeuroSciences (NIMHANS), Hosur Road, Bangalore, India.
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24
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Thompson SL, Welch AC, Iourinets J, Dulawa SC. Ketamine induces immediate and delayed alterations of OCD-like behavior. Psychopharmacology (Berl) 2020; 237:627-638. [PMID: 31927606 DOI: 10.1007/s00213-019-05397-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 11/08/2019] [Indexed: 12/20/2022]
Abstract
RATIONALE Obsessive-compulsive disorder (OCD) is a psychiatric disorder characterized by intrusive obsessive thoughts and/or compulsive behaviors. Currently, serotonin reuptake inhibitors (SRIs) provide the only pharmacological monotherapy for OCD, but response rates are insufficient. Ketamine, a noncompetitive NMDA receptor antagonist, was reported to have rapid, sustained therapeutic effects in OCD patients. However, the mechanisms remain unknown. OBJECTIVES Here, we aimed to provide a platform for investigating mechanisms underlying anti-OCD effects of ketamine treatment by assessing whether ketamine pretreatment could alleviate 5-HT1B receptor (5-HT1BR)-induced OCD-like behavior in mice. METHODS We assessed whether acute ketamine (0, 3, 10, 30 mg/kg), administered at two pretreatment time points (30 min, 24 h), would modulate 5-HT1BR-induced OCD-like behavior in mice. Behavioral measures were perseverative hyperlocomotion in the open field and deficits in prepulse inhibition (PPI) induced by acute pharmacological 5-HT1BR challenge. RESULTS Three milligrams per kilogram of ketamine reduced 5-HT1BR-induced perseverative hyperlocomotion, but not PPI deficits, 24 h postinjection. In contrast, higher doses of ketamine were either ineffective (10 mg/kg) or exacerbated (30 mg/kg) 5-HT1BR-induced perseverative hyperlocomotion 30 min postinjection. At 24 h postinjection, 30 mg/kg ketamine reduced perseverative hyperlocomotion across all groups. CONCLUSIONS Our results suggest that the 5-HT1BR-induced model of OCD-like behavior is sensitive to a low dose of ketamine, a potential fast-acting anti-OCD treatment, and may provide a tool for studying mechanisms underlying the rapid therapeutic effects of ketamine in OCD patients.
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Affiliation(s)
- Summer L Thompson
- Committee on Neurobiology, University of Chicago, Chicago, IL, 60637, USA.,Department of Psychiatry, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA
| | - Amanda C Welch
- Department of Psychiatry, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA
| | - Julia Iourinets
- University of Rochester School of Medicine and Dentistry, Rochester, NY, 14642, USA
| | - Stephanie C Dulawa
- Department of Psychiatry, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA.
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Mathew SJ, Price RB. Ketamine Plus Motivational Enhancement Therapy: Leveraging a Rapid Effect to Promote Enduring Change. Am J Psychiatry 2020; 177:107-109. [PMID: 32008392 DOI: 10.1176/appi.ajp.2019.19121242] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sanjay J Mathew
- The Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, and the Michael E. DeBakey VA Medical Center, Houston (Mathew); and the Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh (Price)
| | - Rebecca B Price
- The Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, and the Michael E. DeBakey VA Medical Center, Houston (Mathew); and the Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh (Price)
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26
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Kishi T, Matsuda Y, Iwata N. Combination Therapy of Serotonin Reuptake Inhibitors and Memantine for Obsessive- Compulsive Disorder: A Meta-Analysis of Double-Blind, Randomized, Placebo-Controlled Trials. J Alzheimers Dis 2019; 64:43-48. [PMID: 29865079 DOI: 10.3233/jad-180237] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We performed a meta-analysis to determine whether combination therapy with serotonin reuptake inhibitors (SRIs) and memantine (MEM) was beneficial for the treatment of obsessive- compulsive disorder. This study included three double-blind, randomized, placebo-controlled trials. MEM+SRI was superior to placebo+SRI with regard to response rate [primary outcome, n = 97; risk ratio = 0.22; 95% confidence intervals (CI) = 0.12-0.42; p < 0.00001; I2 = 0%; number needed to treat = 2], the Yale- Brown Obsessive- Compulsive Scale total [standardized mean difference (SMD) = - 4.56; 95% CI = - 8.50, - 0.62; p = 0.02], obsession subscale (SMD = - 4.39; 95% CI = - 5.94, - 2.85; p < 0.00001), and compulsion subscale score (SMD = - 4.60; 95% CI = - 7.64, - 1.55; p = 0.003). No significant differences in any safety outcome were found between the groups.
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Affiliation(s)
- Taro Kishi
- Department of Psychiatry, Fujita Health University School of Medicine, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, Japan
| | - Yuki Matsuda
- Department of Psychiatry, Fujita Health University School of Medicine, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, Japan.,Department of Psychiatry, Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - Nakao Iwata
- Department of Psychiatry, Fujita Health University School of Medicine, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, Japan
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27
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Wilkinson ST, Holtzheimer PE, Gao S, Kirwin DS, Price RB. Leveraging Neuroplasticity to Enhance Adaptive Learning: The Potential for Synergistic Somatic-Behavioral Treatment Combinations to Improve Clinical Outcomes in Depression. Biol Psychiatry 2019; 85:454-465. [PMID: 30528745 PMCID: PMC6380941 DOI: 10.1016/j.biopsych.2018.09.004] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 08/30/2018] [Accepted: 09/11/2018] [Indexed: 12/17/2022]
Abstract
Until recently, therapeutic development in psychiatry was targeted solely toward symptom reduction. While this is a worthwhile goal, it has yielded little progress in improved therapeutics in the last several decades in the field of mood disorders. Recent advancements in our understanding of pathophysiology suggests that an impairment of neuroplasticity may be a critical part of the development of neuropsychiatric disorders. Interventions that enhance or modulate neuroplasticity often reduce depressive symptoms when applied as stand-alone treatments. Unfortunately, when treatments are discontinued, the disease state often returns as patients relapse. However, treatments that enhance or modulate plasticity not only reduce symptom burden, but also may provide an opportune window wherein cognitive or behavioral interventions could be introduced to harness a state of enhanced neuroplasticity and lead to improved longer-term clinical outcomes. Here, we review the potential of synergistically combining plasticity-enhancing and behavioral therapies to develop novel translational treatment approaches for depression. After reviewing relevant neuroplasticity deficits in depression, we survey biological treatments that appear to reverse such deficits in humans, including N-methyl-D-aspartate receptor modulators (ketamine, D-cycloserine), electroconvulsive therapy, and transcranial brain stimulation. We then review evidence that either directly or indirectly supports the hypothesis that a robust enhancement of neuroplasticity through these methods might promote the uptake of cognitive and behavioral interventions to enhance longer-term treatment outcomes through a synergistic effect. We identify key missing pieces of evidence and discuss future directions to enhance this emerging line of research.
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Affiliation(s)
- Samuel T. Wilkinson
- Department of Psychiatry, Yale School of Medicine and Yale Psychiatric Hospital, New Haven, Connecticut
| | - Paul E. Holtzheimer
- National Center for PTSD, Executive Division, White River Junction VA Medical Center, White River Junction, Vermont;,Department of Psychiatry and Surgery, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire
| | - Shan Gao
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - David S. Kirwin
- Department of Psychiatry, Yale School of Medicine and Yale Psychiatric Hospital, New Haven, Connecticut
| | - Rebecca B. Price
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, Pennsylvania
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Exploring Brain-Derived Neurotrophic Factor Val66Met Polymorphism and Extinction Learning-Based Treatment Outcome in Obsessive-Compulsive Disorder: A Pilot Study. J Clin Psychopharmacol 2019; 39:91-93. [PMID: 30531475 PMCID: PMC7326118 DOI: 10.1097/jcp.0000000000000994] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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29
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Abstract
Proven treatment strategies for obsessive-compulsive disorder (OCD) include pharmacotherapy with serotonin reuptake inhibitors and cognitive behavior therapy (CBT). A significant proportion of patients (25%-30%) fail to respond to these treatment options, necessitating the need for additional treatment options to improve treatment outcomes and quality of life in patients with OCD. Augmentation strategies using various glutamatergic agents have been explored, with diverse outcomes. The aim of this review is to give an overview of the glutamatergic system in the brain with a focus on glutamatergic abnormalities in OCD and to review the existing evidence for various glutamatergic agents used for augmentation.
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Affiliation(s)
- Karthik Sheshachala
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
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30
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Zhang K, Hashimoto K. An update on ketamine and its two enantiomers as rapid-acting antidepressants. Expert Rev Neurother 2018; 19:83-92. [PMID: 30513009 DOI: 10.1080/14737175.2019.1554434] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Introduction: Depression is one of the most disabling diseases worldwide. Approximately one-third of depressed patients are treatment-resistant to the currently available antidepressants and there is a significant therapeutic time lag of weeks to months. There is a clear unmet need for rapid-acting and more efficacious treatments. (R,S)-ketamine, an old anesthetic drug, appears now to be going through a renaissance. Areas covered: This paper reviews recent literature describing the antidepressant effects of ketamine and its enantiomer (S)-ketamine in patients with major depressive disorder (MDD) and bipolar disorder (BD). Furthermore, the authors discuss the therapeutic potential of (R)-ketamine, another enantiomer of (R,S)-ketamine, and (S)-norketamine. Expert commentary: A number of clinical studies have demonstrated that (R,S)-ketamine has rapid-acting and sustained antidepressant activity in treatment-resistant patients with MDD, BD, and other psychiatric disorders. Off-label use of ketamine for mood disorders is proving popular in the United States. Meanwhile, preclinical data suggests that (R)-ketamine can exert longer-lasting antidepressant effects than (S)-ketamine in animal models of depression, and (R)-ketamine may have less detrimental side effects than (R,S)-ketamine and (S)-ketamine. Additionally, (S)-norketamine exhibits rapid and sustained antidepressant effects, with a potency similar to that of (S)-ketamine. Unlike (S)-ketamine, (S)-norketamine does not cause behavioral and biochemical abnormalities and could be a safer than (S)-ketamine too.
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Affiliation(s)
- Kai Zhang
- a Division of Clinical Neuroscience , Chiba University Center for Forensic Mental Health , Chiba , Japan.,b Wuxi Mental Health Center , Nanjing Medical University , Wuxi , China
| | - Kenji Hashimoto
- a Division of Clinical Neuroscience , Chiba University Center for Forensic Mental Health , Chiba , Japan
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Grassi G, Pallanti S. Current and up-and-coming pharmacotherapy for obsessive-compulsive disorder in adults. Expert Opin Pharmacother 2018; 19:1541-1550. [PMID: 30321070 DOI: 10.1080/14656566.2018.1528230] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Only 40-60% of obsessive-compulsive patients respond to first line treatments, such as selective serotonin reuptake inhibitors (SSRIs) and cognitive-behavioral therapy. Several second-line treatments have been investigated in the last two decades, and most of them seem to work, at least in a subset of patients. However, since there is still a lack of treatment predictors, the treatment of obsessive-compulsive disorder (OCD) is still empirical and non-evidence based. AREAS COVERED In this paper, we review current and up-and-coming pharmacotherapy for OCD in adults, focusing on two emerging fields of research, inflammation and glutamate systems, since they have attracted the greatest attention in recent years in OCD pharmacological research. EXPERT OPINION Most of the investigated second-line agents seem to work at least in a subset of patients with OCD. These results raise an open question: what works for who? In our opinion, this question should be answered in a precision medicine perspective or, in other words, individualizing diagnostic processes and treatment approaches. In a precision medicine approach, OCD treatment should be sub-type specific, phase specific, multimodal and sequential, and, more importantly, dimensional.
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Affiliation(s)
- Giacomo Grassi
- a Department of Neuroscience, Psychology, Drug Research and Child Health, Neurofarba , University of Florence , Florence , Italy.,b Institute of Neuroscience , Florence , Italy
| | - Stefano Pallanti
- b Institute of Neuroscience , Florence , Italy.,c Department of Psychiatry and Behavioral Science , Stanford University Medical Center , Stanford , CA , USA
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Schenberg EE. Psychedelic-Assisted Psychotherapy: A Paradigm Shift in Psychiatric Research and Development. Front Pharmacol 2018; 9:733. [PMID: 30026698 PMCID: PMC6041963 DOI: 10.3389/fphar.2018.00733] [Citation(s) in RCA: 103] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 06/18/2018] [Indexed: 12/20/2022] Open
Abstract
Mental disorders are rising while development of novel psychiatric medications is declining. This stall in innovation has also been linked with intense debates on the current diagnostics and explanations for mental disorders, together constituting a paradigmatic crisis. A radical innovation is psychedelic-assisted psychotherapy (PAP): professionally supervised use of ketamine, MDMA, psilocybin, LSD and ibogaine as part of elaborated psychotherapy programs. Clinical results so far have shown safety and efficacy, even for “treatment resistant” conditions, and thus deserve increasing attention from medical, psychological and psychiatric professionals. But more than novel treatments, the PAP model also has important consequences for the diagnostics and explanation axis of the psychiatric crisis, challenging the discrete nosological entities and advancing novel explanations for mental disorders and their treatment, in a model considerate of social and cultural factors, including adversities, trauma, and the therapeutic potential of some non-ordinary states of consciousness.
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Fortress AM, Smith IM, Pang KC. Ketamine facilitates extinction of avoidance behavior and enhances synaptic plasticity in a rat model of anxiety vulnerability: Implications for the pathophysiology and treatment of anxiety disorders. Neuropharmacology 2018; 137:372-381. [DOI: 10.1016/j.neuropharm.2018.05.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 05/04/2018] [Accepted: 05/07/2018] [Indexed: 02/08/2023]
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34
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Dougherty JW, Ettensohn MF, Levine SP. Beyond Depression: Ketamine and Glutamatergic Agents for PTSD, OCD, and Other Potential Applications. Psychiatr Ann 2018. [DOI: 10.3928/00485713-20180312-03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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35
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Linkovski O, Shen H, Zwerling J, Filippou-Frye M, Jo B, Cordell E, Cooper TB, Simpson HB, Burch RM, Moskal JR, Lee F, Rodriguez CI. Effects of Rapastinel (Formerly GLYX-13) on Serum Brain-Derived Neurotrophic Factor in Obsessive-Compulsive Disorder. J Clin Psychiatry 2018; 79:17l11824. [PMID: 29505186 PMCID: PMC7370843 DOI: 10.4088/jcp.17l11824] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Omer Linkovski
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California
| | - Hanyang Shen
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California
| | - Jordana Zwerling
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California
| | - Maria Filippou-Frye
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California
| | - Booil Jo
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California
| | - Elisabeth Cordell
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California
| | - Thomas B. Cooper
- Analytical Psychopharmacology Laboratory, Nathan Kline Institute, Research Foundation for Mental Hygiene of New York State, Orangeburg, New York
| | - Helen Blair Simpson
- Department of Psychiatry, College of Physicians and Surgeons, Columbia University, New York, New York,New York State Psychiatric Institute, New York, New York
| | | | - Joseph R. Moskal
- Aptinyx, Inc, Evanston, Illinois,The Falk Center for Molecular Therapeutics, Department of Biomedical Engineering, McCormick School of Engineering and Applied Sciences, Northwestern University, Evanston, Illinois
| | - Francis Lee
- Department of Psychiatry, Weill Cornell Medical College, New York, New York
| | - Carolyn I. Rodriguez
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California,Veterans Affairs Palo Alto Health Care System, Palo Alto, California
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37
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Intranasal Ketamine and Cognitive-Behavioral Therapy for Treatment-Refractory Obsessive-Compulsive Disorder. J Clin Psychopharmacol 2017; 37:269-271. [PMID: 28121735 PMCID: PMC5321820 DOI: 10.1097/jcp.0000000000000659] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Rodriguez CI, Lapidus KAB, Zwerling J, Levinson A, Mahnke A, Steinman SA, Kalanthroff E, Simpson HB. Challenges in Testing Intranasal Ketamine in Obsessive-Compulsive Disorder. J Clin Psychiatry 2017; 78:466-467. [PMID: 28448699 PMCID: PMC7401001 DOI: 10.4088/jcp.16cr11234] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Carolyn I. Rodriguez
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California,Veterans Affairs Palo Alto Health Care System, Palo Alto, California
| | | | - Jordana Zwerling
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California
| | - Amanda Levinson
- Department of Psychology, Stony Brook University, Stony Brook, New York
| | - Amanda Mahnke
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California
| | | | - Eyal Kalanthroff
- Department of Psychology, The Hebrew University of Jerusalem, Israel
| | - Helen Blair Simpson
- Columbia University, Department of Psychiatry, College of Physicians and Surgeons, New York, New York,New York State Psychiatric Institute, New York
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Lener MS, Kadriu B, Zarate CA. Ketamine and Beyond: Investigations into the Potential of Glutamatergic Agents to Treat Depression. Drugs 2017; 77:381-401. [PMID: 28194724 PMCID: PMC5342919 DOI: 10.1007/s40265-017-0702-8] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Clinical and preclinical studies suggest that dysfunction of the glutamatergic system is implicated in mood disorders such as major depressive disorder and bipolar depression. In clinical studies of individuals with major depressive disorder and bipolar depression, rapid reductions in depressive symptoms have been observed in response to subanesthetic-dose ketamine, an agent whose mechanism of action involves the modulation of glutamatergic signaling. The findings from these studies have prompted the repurposing and/or development of other glutamatergic modulators for antidepressant efficacy, both as monotherapy or as an adjunct to conventional monoaminergic antidepressants. This review highlights the evidence supporting the antidepressant effects of subanesthetic-dose ketamine as well as other glutamatergic modulators, such as D-cycloserine, riluzole, CP-101,606, CERC-301 (previously known as MK-0657), basimglurant, JNJ-40411813, dextromethorphan, nitrous oxide, GLYX-13, and esketamine.
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Affiliation(s)
- Marc S Lener
- Experimental Therapeutics and Pathophysiology Branch, Intramural Research Program, National Institute of Mental Health, National Institutes of Health, 10 Center Drive, Building 10/CRC, Room 7-5545, Bethesda, MD, USA.
| | - Bashkim Kadriu
- Experimental Therapeutics and Pathophysiology Branch, Intramural Research Program, National Institute of Mental Health, National Institutes of Health, 10 Center Drive, Building 10/CRC, Room 7-5545, Bethesda, MD, USA
| | - Carlos A Zarate
- Experimental Therapeutics and Pathophysiology Branch, Intramural Research Program, National Institute of Mental Health, National Institutes of Health, 10 Center Drive, Building 10/CRC, Room 7-5545, Bethesda, MD, USA
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Marinova Z, Chuang DM, Fineberg N. Glutamate-Modulating Drugs as a Potential Therapeutic Strategy in Obsessive-Compulsive Disorder. Curr Neuropharmacol 2017; 15:977-995. [PMID: 28322166 PMCID: PMC5652017 DOI: 10.2174/1570159x15666170320104237] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 12/27/2016] [Accepted: 03/15/2017] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVE Obsessive-compulsive disorder (OCD) is a mental disease commonly associated with severe distress and impairment of social functioning. Serotonin reuptake inhibitors and/or cognitive behavioural therapy are the therapy of choice, however up to 40% of patients do not respond to treatment. Glutamatergic signalling has also been implicated in OCD. The aim of the current study was to review the clinical evidence for therapeutic utility of glutamate-modulating drugs as an augmentation or monotherapy in OCD patients. METHODS We conducted a search of the MEDLINE database for clinical studies evaluating the effect of glutamate-modulating drugs in OCD. RESULTS Memantine is the compound most consistently showing a positive effect as an augmentation therapy in OCD. Anti-convulsant drugs (lamotrigine, topiramate) and riluzole may also provide therapeutic benefit to some OCD patients. Finally, ketamine may be of interest due to its potential for a rapid onset of action. CONCLUSION Further randomized placebo-controlled trials in larger study populations are necessary in order to draw definitive conclusions on the utility of glutamate-modulating drugs in OCD. Furthermore, genetic and epigenetic factors, clinical symptoms and subtypes predicting treatment response to glutamate-modulating drugs need to be investigated systematically.
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Affiliation(s)
- Zoya Marinova
- Department of Psychosomatic Medicine, Clinic Barmelweid, Barmelweid, Switzerland
| | - De-Maw Chuang
- National Institute of Mental Health, National Institutes of Health, Bethesda, Maryland, United States
| | - Naomi Fineberg
- Hertfordshire Partnership University NHS Foundation Trust and University of Hertfordshire, Welwyn Garden City, AL8 6HG, United Kingdom
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Rodriguez CI, Zwerling J, Kalanthroff E, Shen H, Filippou M, Jo B, Simpson HB, Burch RM, Moskal JR. Effect of a Novel NMDA Receptor Modulator, Rapastinel (Formerly GLYX-13), in OCD: Proof of Concept. Am J Psychiatry 2016; 173:1239-1241. [PMID: 27903098 PMCID: PMC5304999 DOI: 10.1176/appi.ajp.2016.16080868] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Carolyn I. Rodriguez
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA,Veterans Affairs Palo Alto Health Care System, Palo Alto, CA
| | - Jordana Zwerling
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA
| | - Eyal Kalanthroff
- Columbia University, Department of Psychiatry, College of Physicians and Surgeons, New York, NY 10032,New York State Psychiatric Institute, New York, NY 10032
| | - Hanyang Shen
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA
| | - Maria Filippou
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA
| | - Booil Jo
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA
| | - Helen Blair Simpson
- Columbia University, Department of Psychiatry, College of Physicians and Surgeons, New York, NY 10032,New York State Psychiatric Institute, New York, NY 10032
| | | | - Joseph R. Moskal
- Aptinyx, Inc., 1801 Maple Ave., Evanston, IL 60201,The Falk Center for Molecular Therapeutics, Dept. of Biomedical Engineering, McCormick School of Engineering and Applied Sciences, Northwestern University, Evanston, IL 60201
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